Stack-based buffer overflow in Apache HTTP Server - CVE-2020-35452

Vulnerability identifier: #VU53775

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-35452

CWE-ID: CWE-121

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing Digest nounces in mod_auth_digest. A remote unauthenticated attacker can send a specially crafted HTTP request, trigger stack overflow by one nul byte and crash the server.

Apache HTTP Server
ClevOS
Gentoo Linux
Amazon Linux AMI
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Enterprise Storage
Anolis OS
HPE Helion Openstack
SUSE OpenStack Cloud
SUSE OpenStack Cloud Crowbar
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
SUSE Linux Enterprise Debuginfo
SUSE Linux Enterprise Point of Sale
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
Slackware Linux
Ubuntu
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Module for Server Applications
openEuler
Fedora
jbcs-httpd24-openssl-pkcs11 (Red Hat package)
jbcs-httpd24-openssl-chil (Red Hat package)
jbcs-httpd24-apr-util (Red Hat package)
jbcs-httpd24-apr (Red Hat package)
jbcs-httpd24-mod_http2 (Red Hat package)
jbcs-httpd24-nghttp2 (Red Hat package)
jbcs-httpd24-mod_md (Red Hat package)
apache2 (Debian package)
jbcs-httpd24-httpd (Red Hat package)
jbcs-httpd24-mod_security (Red Hat package)
jbcs-httpd24-curl (Red Hat package)
SUSE Linux Enterprise Module for Packagehub Subpackages
mod_http2
mod_md
apache2
apache2-doc
apache2-example-pages
apache2-prefork
apache2-utils
apache2-worker
apache2-devel
apache2-debuginfo
apache2-debugsource
apache2-prefork-debuginfo
apache2-utils-debuginfo
apache2-worker-debuginfo
apache2-bin (Ubuntu package)
apache2 (Ubuntu package)
httpd-manual
mod_session
httpd
httpd-devel
httpd-tools
mod_ldap
httpd-filesystem
mod_ssl
mod_proxy_html
apache2-event-debuginfo
apache2-event
httpd-debuginfo
httpd-help
httpd-debugsource
JBoss Core Services
EasyApache
Dell Secure Connect Gateway
IBM Rational Build Forge
Maximo Application Suite - IoT Component

Install updates from vendor's website.

Apache HTTP Server - update to 2.4.47
jbcs-httpd24-openssl-pkcs11 (Red Hat package) - addressed in versions 0.4.10-22.el8jbcs, 0.4.10-22.jbcs.el7
jbcs-httpd24-openssl-chil (Red Hat package) - addressed in versions 1.0.0-7.el8jbcs, 1.0.0-7.jbcs.el7
jbcs-httpd24-apr-util (Red Hat package) - addressed in versions 1.6.1-84.el8jbcs, 1.6.1-84.jbcs.el7
jbcs-httpd24-apr (Red Hat package) - addressed in versions 1.6.3-107.el8jbcs, 1.6.3-107.jbcs.el7
jbcs-httpd24-mod_http2 (Red Hat package) - addressed in versions 1.15.7-21.el8jbcs, 1.15.7-21.jbcs.el7
jbcs-httpd24-nghttp2 (Red Hat package) - addressed in versions 1.39.2-39.el8jbcs, 1.39.2-39.jbcs.el7
jbcs-httpd24-mod_md (Red Hat package) - addressed in versions 2.0.8-40.el8jbcs, 2.0.8-40.jbcs.el7
apache2 (Debian package) - update to 2.4.38-3+deb10u5
JBoss Core Services - update to 2.4.37 SP10
jbcs-httpd24-httpd (Red Hat package) - addressed in versions 2.4.37-78.el8jbcs, 2.4.37-78.jbcs.el7
jbcs-httpd24-mod_security (Red Hat package) - addressed in versions 2.9.2-67.GA.el8jbcs, 2.9.2-67.GA.jbcs.el7
EasyApache - update to 4 2021-6-2
Dell Secure Connect Gateway - update to 5.12.00.10
jbcs-httpd24-curl (Red Hat package) - addressed in versions 7.78.0-2.el8jbcs, 7.78.0-2.jbcs.el7
IBM Rational Build Forge - update to 8.0.0.21
mod_http2 - update to 1.15.7-5
mod_md - update to 2.0.8-8
apache2 - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-doc - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-example-pages - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1
apache2-prefork - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-utils - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-worker - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-devel - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-debuginfo - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-debugsource - addressed in versions 2.2.34-70.35.1, 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-prefork-debuginfo - addressed in versions 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-utils-debuginfo - addressed in versions 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-worker-debuginfo - addressed in versions 2.4.23-29.74.1, 2.4.33-3.50.1, 2.4.43-3.22.1
apache2-bin (Ubuntu package) - addressed in versions 2.4.29-1ubuntu4.16, 2.4.41-4ubuntu3.3, 2.4.46-1ubuntu1.2, 2.4.46-4ubuntu1.1, 2.4.182ubuntu3.17+esm1
apache2 (Ubuntu package) - addressed in versions 2.4.29-1ubuntu4.16, 2.4.41-4ubuntu3.3, 2.4.46-1ubuntu1.2, 2.4.46-4ubuntu1.1, 2.4.182ubuntu3.17+esm1
httpd-manual - update to 2.4.37-47.0.1
mod_session - update to 2.4.37-47.0.1
httpd - update to 2.4.37-47.0.1
httpd-devel - update to 2.4.37-47.0.1
httpd-tools - update to 2.4.37-47.0.1
mod_ldap - update to 2.4.37-47.0.1
httpd-filesystem - update to 2.4.37-47.0.1
mod_ssl - update to 2.4.37-47.0.1
mod_proxy_html - update to 2.4.37-47.0.1
apache2-event-debuginfo - update to 2.4.43-3.22.1
apache2-event - update to 2.4.43-3.22.1
httpd-debuginfo - update to 2.4.43-7
httpd-filesystem - update to 2.4.43-7
httpd-help - update to 2.4.43-7
mod_proxy_html - update to 2.4.43-7
mod_session - update to 2.4.43-7
mod_ldap - update to 2.4.43-7
httpd-tools - update to 2.4.43-7
httpd-devel - update to 2.4.43-7
mod_md - update to 2.4.43-7
mod_ssl - update to 2.4.43-7
httpd - update to 2.4.43-7
httpd-debugsource - update to 2.4.43-7
httpd - addressed in versions 2.4.49-1.fc34, 2.4.49-1.fc35
Maximo Application Suite - IoT Component - addressed in versions 8.7.20, 8.8.16, 9.0.6

• https://downloads.apache.org/httpd/CHANGES_2.4.48

• Multiple vulnerabilities in Apache HTTP Server
• cPanel update for EasyApache
• Slackware Linux update for httpd
• Debian update for apache2
• Amazon Linux AMI update for httpd24
• Gentoo update for Apache
• Multiple vulnerabilities in Red Hat JBoss Core Services Apache HTTP Server
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• SUSE update for apache2
• SUSE update for apache2
• SUSE update for apache2
• SUSE update for apache2
• Ubuntu update for apache2
• Ubuntu update for apache2
• Multiple vulnerabilities in DELL Secure Connect Gateway Security
• ClevOS update for IBM Cloud Object Storage Systems
• openEuler 20.03 LTS SP1 update for httpd
• Fedora 34 update for httpd
• Fedora 35 update for httpd
• Multiple vulnerabilities in IBM Maximo Application Suite - IoT Component
• Anolis OS update for httpd:2.4 module
• Multiple vulnerabilities in IBM Rational Build Forge